New example.

Author: dddomodossola

examples/threaded_start_app.py

@@ -0,0 +1,65 @@
+"""
+   Licensed under the Apache License, Version 2.0 (the "License");
+   you may not use this file except in compliance with the License.
+   You may obtain a copy of the License at
+
+       http://www.apache.org/licenses/LICENSE-2.0
+
+   Unless required by applicable law or agreed to in writing, software
+   distributed under the License is distributed on an "AS IS" BASIS,
+   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+   See the License for the specific language governing permissions and
+   limitations under the License.
+"""
+
+"""
+    This example shows how to start the application as a thread, 
+     without stopping the main thread.
+    A label is accessed from the main thread. 
+    NOTE:
+        It is important to run the server with parameter multiple_instance=False
+"""
+
+import remi
+import remi.gui as gui
+from remi import start, App, Server
+import time
+
+#here will be stored the application instance once a client connects to.
+global_app_instance = None 
+
+class MyApp(App):
+    label = None
+
+    def main(self):
+        global global_app_instance
+        global_app_instance = self
+
+        # creating a container VBox type, vertical (you can use also HBox or Widget)
+        main_container = gui.VBox(width=300, height=200, style={'margin': '0px auto'})
+        self.label = gui.Label("a label")
+
+        main_container.append(self.label)
+
+        # returning the root widget
+        return main_container
+
+
+if __name__ == "__main__":
+    #create the server with parameter start=False to prevent server autostart
+    server = remi.Server(MyApp, start=False, address='0.0.0.0', port=0, \
+                                start_browser=True, multiple_instance=False)
+    #start the server programmatically
+    server.start()
+
+    index = 0
+    #loop the main thread
+    while True:
+        #checks that the app instance is created
+        if not global_app_instance is None:  
+            #the update lock is important to sync the app thread
+            with global_app_instance.update_lock:
+                #set the label value
+                global_app_instance.label.set_text("%s"%index)
+                index = index + 1
+        time.sleep(1)